public void testComputeIfAbsent_removalListener() {
    List<RemovalNotification<Object, Object>> notifications = new ArrayList<>();
    RemovalListener<Object, Object> removalListener = notifications::add;
    Cache<Object, Object> cache =
        CacheBuilder.newBuilder().removalListener(removalListener).build();
    cache.put("a", "b");
    cache.asMap().computeIfAbsent("a", k -> "c");
    assertThat(notifications).isEmpty();
  }

      refreshExecutor.shutdown();
    }
  }

  public void testSetRemovalListener() {
    RemovalListener<Object, Object> testListener = TestingRemovalListeners.nullRemovalListener();
    LocalCache<Object, Object> map =
        makeLocalCache(createCacheBuilder().removalListener(testListener));
    assertThat(map.removalListener).isSameInstanceAs(testListener);
  }

  public void testSetTicker() {
    Ticker testTicker =

  /**
   * A listener that is invoked when an entry is removed due to expiration or garbage collection of
   * soft/weak entries.
   */
  final RemovalListener<K, V> removalListener;

  /** Measures time in a testable way. */
  final Ticker ticker;

  /** Factory used to create new entries. */
  final EntryFactory entryFactory;

  /**

  /**
   * A listener that is invoked when an entry is removed due to expiration or garbage collection of
   * soft/weak entries.
   */
  final RemovalListener<K, V> removalListener;

  /** Measures time in a testable way. */
  final Ticker ticker;

  /** Factory used to create new entries. */
  final EntryFactory entryFactory;

  /**